Control method of over-temperature protection, driver chip and control system of over-temperature protection

A control method of over-temperature protection, a driver chip and a control system of over-temperature protection are disclosed. The control method includes the following steps: a driver chip provides an output voltage to drive a DC fan. A temperature of the driver chip is detected by an over-tempe...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	Chu Ping-Ying
Format:	Patent
Sprache:	eng
Schlagworte:	CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROLLING CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION PHYSICS REGULATING SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
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Beschreibung
Zusammenfassung:	A control method of over-temperature protection, a driver chip and a control system of over-temperature protection are disclosed. The control method includes the following steps: a driver chip provides an output voltage to drive a DC fan. A temperature of the driver chip is detected by an over-temperature detection module. When the temperature of the driver chip is higher than a first threshold value, the power supplying to the driver chip is stopped, so that the driver chip can cool down. After the temperature of the driver chip is lower than a second threshold value, the driver chip is restarted. A preset voltage is provided to the DC fan by the driver chip and the DC fan rotates at a preset rotational speed which is higher than the rotational speed.